#include "../common/dispatcher.hpp"
#include "../client/rpc_client.hpp"
#include "rpc_router.hpp"
#include "rpc_registry.hpp"
#include "rpc_topic.hpp"

namespace gmrpc
{
    namespace server
    {

        // 注册中心服务端：只需要针对服务注册与发现请求进行处理即可
        class RegistryServer
        {
        public:
            using ptr = std::shared_ptr<RegistryServer>;
            RegistryServer(int port)
                : _pd_manager(std::make_shared<PDManager>()),
                  _dispatcher(std::make_shared<Dispatcher>())
            {
                auto service_cb = std::bind(&PDManager::onServiceRequest, _pd_manager.get(),
                                            std::placeholders::_1, std::placeholders::_2);

                _dispatcher->registerHandler<ServiceRequest>(MType::REQ_SERVICE, service_cb);

                _server = ServerFactory::create(port);
                auto message_cb = std::bind(&Dispatcher::onMessage, _dispatcher.get(),
                                            std::placeholders::_1, std::placeholders::_2);

                _server->setMessageCallback(message_cb);

                auto close_cb = std::bind(&RegistryServer::onConnShutDown, this, std::placeholders::_1);

                _server->setCloseCallback(close_cb);
            }

            void start()
            {
                _server->start();
            }

        private:
            void onConnShutDown(const BaseConnection::ptr &conn)
            {
                _pd_manager->onConnShutDown(conn);
            }

        private:
            PDManager::ptr _pd_manager;
            Dispatcher::ptr _dispatcher;
            BaseServer::ptr _server;
        };

        class RpcServer
        {
        public:
            using ptr = std::shared_ptr<RpcServer>;

            // rpc--server端有两套地址：
            // 1. rpc服务调用地址信息--必须是rpc服务器对外访问地址(云服务器--监听地址和访问地址不同)
            // 2. 注册中心服务端地址信息 -- 启用服务注册之后，链接注册中心进行服务注册用的
            RpcServer(const Address &access_addr,
                      bool enableRegistry = false,
                      const Address &register_server_addr = Address())
                : _enableRegistry(enableRegistry),
                  _access_addr(access_addr),
                  _router(std::make_shared<server::RpcRouter>()),
                  _dispatcher(std::make_shared<Dispatcher>())
            {
                if (enableRegistry)
                {
                    _reg_client = std::make_shared<client::RegistryClient>(
                        register_server_addr.first, register_server_addr.second);
                }
                // 当前成员server是一个rpcserver，用于提供rpc服务
                auto rpc_cb = std::bind(&gmrpc::server::RpcRouter::onRpcRequest, _router.get(),
                                        std::placeholders::_1, std::placeholders::_2);
                _dispatcher->registerHandler<gmrpc::RpcRequest>(gmrpc::MType::REQ_RPC, rpc_cb);

                _server = ServerFactory::create(access_addr.second);

                auto message_cb = std::bind(&gmrpc::Dispatcher::onMessage, _dispatcher.get(),
                                            std::placeholders::_1, std::placeholders::_2);

                _server->setMessageCallback(message_cb);
            }

            void registryMethod(const ServiceDescribe::ptr &service)
            {
                _router->registerMethod(service);
                if (_enableRegistry)
                {
                    _reg_client->registryMethod(service->method(), _access_addr);
                }
            }

            void start()
            {
                _server->start();
            }

        private:
            bool _enableRegistry;
            Address _access_addr;
            client::RegistryClient::ptr _reg_client;
            RpcRouter::ptr _router;
            Dispatcher::ptr _dispatcher;
            BaseServer::ptr _server;
        };

        class TopicServer
        {
        public:
            using ptr = std::shared_ptr<TopicServer>;
            TopicServer(int port)
                : _topic_manager(std::make_shared<TopicManager>()),
                  _dispatcher(std::make_shared<Dispatcher>())
            {
                auto topic_cb = std::bind(&TopicManager::onTopicRequest, _topic_manager.get(),
                                          std::placeholders::_1, std::placeholders::_2);

                _dispatcher->registerHandler<TopicRequest>(MType::REQ_TOPIC, topic_cb);

                _server = ServerFactory::create(port);
                auto message_cb = std::bind(&Dispatcher::onMessage, _dispatcher.get(),
                                            std::placeholders::_1, std::placeholders::_2);

                _server->setMessageCallback(message_cb);

                auto close_cb = std::bind(&TopicServer::onConnShutDown, this, std::placeholders::_1);

                _server->setCloseCallback(close_cb);
            }

            void start()
            {
                _server->start();
            }

            void onConnShutDown(const BaseConnection::ptr &conn)
            {
                _topic_manager->onShutdown(conn);
            }

        private:
            TopicManager::ptr _topic_manager;
            Dispatcher::ptr _dispatcher;
            BaseServer::ptr _server;
        };


    }
}